Benchmark with ffmpeg
This simple test lets you compare how fast your machine is at encoding videos.
Just use a sample video like this one:
wget https://filesamples.com/samples/video/mkv/sample_1280x720_surfing_with_audio.mkv
And start ffmpeg:
ffmpeg -i sample_1280x720_surfing_with_audio.mkv -c:v libx265 -preset medium -crf 20 -an -f null -
Sample output:
encoded 4389 frames in 163.39s (26.86 fps), 3440.14 kb/s, Avg QP:23.81